Leetcode Problem 2398. Maximum Number of Robots Within Budget

2398. Maximum Number of Robots Within Budget

Leetcode Solutions

Sliding Window with Monotonic Queue

  1. Initialize two pointers left and right to represent the sliding window's boundaries, and set them to 0.
  2. Initialize a variable currentSum to keep track of the sum of running costs within the window.
  3. Initialize a deque to maintain the indices of the robots in the current window in decreasing order of their charge times.
  4. Iterate with right pointer over the robots: a. Add the current robot's running cost to currentSum. b. Maintain the deque to always have the maximum charge time at the front. c. Calculate the total cost for the current window. d. If the total cost exceeds the budget, shrink the window from the left by incrementing left and adjust currentSum and deque accordingly.
  5. Update the answer with the maximum window size seen so far that fits within the budget.
  6. Return the answer.
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Greedy Approach with Sorting

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